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0 #ifndef STELLAR_UTILS_CPP_H

1 #define STELLAR_UTILS_CPP_H

2

3 #include <cstdint>

4

5 #define C64(constantU64) constantU64##ULL

6 #define C32(constantU64) constantU64##UL

7

8 typedef uint64_t U64;

9 typedef uint32_t U32;

10

11 #include <type_traits>

12

13 template <typename E> constexpr typename std::underlying_type<E>::type to_underlying(E e) noexcept {

14 return static_cast<typename std::underlying_type<E>::type>(e);

15 }

16

17 template <typename C, C beginVal, C endVal> class Iterator {

18 typedef typename std::underlying_type<C>::type val_t;

19 int val;

20

21 public:

22 constexpr Iterator(const C &f) : val(static_cast<val_t>(f)) {}

23 constexpr Iterator() : val(static_cast<val_t>(beginVal)) {}

24 constexpr Iterator operator++() {

25 ++val;

26 return *this;

27 }

28 constexpr C operator*() { return static_cast<C>(val); }

29 constexpr Iterator begin() { return *this; }

30 constexpr Iterator end() {

31 // static const Iterator endIter = ++Iterator(endVal);

32 // return endIter;

33 return ++Iterator(endVal);

34 }

35 constexpr bool operator!=(const Iterator &i) { return val != i.val; }

36 };

37

38 #endif